SNAPP - Data-Limited Fisheries

Project summary Overfishing threatens the health of many of the world’s fish stocks — and the millions who rely on fish for their livelihood and animal protein. But we lack regular assessment data for more than 90% of Earth’s fisheries…and reliably assessed fisheries tend to be better managed and thus less overfished. Can new, inexpensive approaches to assess such data-limited fisheries be implemented across the globe?
The COST Database The COST database is part of Decision Support System for data limited fisheries management. This database maps out the costs of each component of management including:

Costs of monitoring/data collection
Costs of assessment/analysis
Costs of implementing management actions and enforcement

This website provides a webinterface to interact with this database and estimate the cost of these different components based on user-defined parameters describing a fishery Click on any of the menu to get started SNAPP Webpage

Please enter data for all boxes. If unsure, please enter your best estimation.

Fishery Area (km2):

Fleet Size:

Number of Ports:

Daily Boat Cost (fuel):

Daily Wage - Low (USD):

Daily Wage - Medium (USD):

Daily Wage - High (USD):

Gross Value of Production (GVP) of the Fishery:

Save data to .csv

For a summary cost of multiple monitoring activities, please check the monitory activities you wish to evaluate.

Market Survey

Port Monitoring BottomUp

Port Monitoring NGO

Port Monitoring TopDown

Processor Monitoring

Interviews

Fishery Dep Snapshot BottomUp

Fishery Dep Snapshot NGO

Fishery Dep Snapshot TopDown

Snapshot Data Biology BottomUp

Snapshot Data Biology NGO

Snapshot Data Biology TopDown

Indep Survey Fishers Irreg BottomUp

Indep Survey Fishers Reg NGO

Indep Survey Ind Practitioners Irreg TopDown

Indep Survey Ind Practitioners Reg TopDown

Auto Info Gathering BottomUp

Auto Info Gathering NGO

Auto Info Gathering TopDown

Logboks Informal

Logboks Formal

Catch Diposal Records

Observers

Please click the arrows to the right of the column names to sort in ascending order

Please enter data for all boxes. If unsure, please enter your best estimation.

Wage-High:

Manual Data Entry (Days in First Year):

Quality Checking of Data (Days in First Year):

Data Formatting/organising (Days in First Year):

Manual Data Entry (Days in Subsequent Years):

Quality Checking of Data (Days in Subsequent Years):

Data Formatting/organising (Days in Subsequent Years):

Gross Value of Production (GVP) of the Fishery:

Save data to .csv

For a summary cost of multiple assessment methods, please check the monitory activities you wish to evaluate.

None -> direct to management (control rules)

Changes in mean length/weight/size percentiles

Size relative to size-at-maturity

Ratio of density inside to outside MPAs

Changes in gear type or manner of deployment

Changes in dominant species

Changes in species composition ratios

Catch, CPUE by size indicators

Linear regression on CPUE time series

Sustainability indicators (Cope and Punt, Froese)

Changes in spatial distribution of catch or effort

Expert judgement

Exploratory analysis (e.g. corral data)

Use biomass surveys to inform spatial management (e.g. areas suitable to open/close under rotational spatial management)

Standardised CPUE as proxy abundance index

Size-based sequential trigger system

Catch or effort based sequential trigger systems

Sequential trigger framework involving Catch/Effort, CPUE, size, sex ratio, etc

CUSUM

Traffic lights

Hierarchical decision trees - may or may not have reference points

Size-specific catch rate indicators for fish sampled inside and outside of MPAs, and per-recruit

estimating fishing mortality, F (catch curves)

estimating lifetime egg production

Zhou catch-only approach

ORCS

DCAC

Depletion-based SRA

Length-based SPR

Production model

Modal analysis to estimate growth rates

Depletion analysis (CPUE versus cumulative catch)

SAFE

RAPFISH (MDS)

Productivity-susceptibility analysis (PSA) to estimate the risk of overfishing

Comprehensive assessment of risk to ecosystems (CARE)

Ecosystem threshold analysis

Ecological risk analysis (ERA)

Please click the arrows to the right of the column names to sort in ascending order

Please enter data for all boxes. If unsure, please enter your best estimation.

Wage-High:

Wage-Medium:

Wage-Low:

Number of Ports:

Fleet Size:

Daily Boat Cost (fuel):

Fishery Area (km2):

Length of Coastline (km):

Daily Plane Cost (fuel):

Save data to .csv

Please click the arrows to the right of the column names to sort in ascending order